The Australian Champion Racehorse of the Year is awarded to the Thoroughbred horse who is voted to be the champion horse within an Australian racing season. This award is open to all racehorses racing within Australia, regardless of age and sex, and includes overseas performances.
This award originally started as the VRC Award and was renamed Australia's Champion Racehorse in 1982. A separate award was voted on between 1976/77 and 1993/4 by the ARMA with the only variations being Gurner's Lane (1982/3) and Bonecrusher (1986/7). The voting bodies combined from 1993/4.
Only one horse has ever won the award three times, the New Zealand mare Sunline, who was voted champion for the consecutive 2001-02, 2002-03 and 2003-04 seasons.
<nowiki>*</nowiki> Two awards made in 1982-83 & 1986-87 with ARMA selecting different winner